Title:
工作機械の主軸装置
Document Type and Number:
Japanese Patent JP6821056
Kind Code:
B2
Abstract:
A main spindle device (10) for a machine tool that checks the seating of a tool holder (30) using compressed air, wherein the main spindle device (10) for a machine tool comprises: a main spindle (12) that has a distal end face (18) in close contact with a flange end of the tool holder (30); an annular recess (25) that is formed on the distal end face (18) of the main spindle so as to be covered by the flange end of the tool holder; an air supply flow channel (21) that is linked to the annular recess and that supplies compressed air to the annular recess; a compressed air source (23) that supplies air to the air supply flow channel; and a pressure detector (22) that detects the pressure of the compressed air in the air supply flow channel. The annular recess (25) has a first section (25a) and a second section (25b) that is deeper than the first section, and the air supply flow channel is opened to the second section (25b).
Inventors:
Seiji Kamiura
Application Number:
JP2019558862A
Publication Date:
January 27, 2021
Filing Date:
December 15, 2017
Export Citation:
Assignee:
Makino Jay Co., Ltd.
International Classes:
B23B31/00
Domestic Patent References:
| JP2017159383A | ||||
| JP2009226541A |
Foreign References:
| WO2009122763A1 | ||||
| WO2016034566A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Koichi Ito
Kentaro Ito
Shinji Mitsuhashi
Koichi Ito
Kentaro Ito